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https://issues.apache.org/jira/browse/KAFKA-2822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15002740#comment-15002740
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Ashish K Singh commented on KAFKA-2822:
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[~hachikuji] I am guessing this was an intended change, however just want to
make sure that we want to stick to returning empty list if consumer group does
not exist. If so, the test and consumerGroupCommand's behavior will have to be
changes accordingly.
> DescribeConsumerGroup now returns empty list for non-existent group, it used
> to throw IllegalArgumentException
> --------------------------------------------------------------------------------------------------------------
>
> Key: KAFKA-2822
> URL: https://issues.apache.org/jira/browse/KAFKA-2822
> Project: Kafka
> Issue Type: Bug
> Reporter: Ashish K Singh
> Assignee: Ashish K Singh
>
> DescribeConsumerGroup now returns empty list for non-existent group, it used
> to throw IllegalArgumentException. This is causing
> testDescribeConsumerGroupForNonExistentGroup to fail.
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